B. Narsaiah et al., SYNTHESIS OF NOVEL D-3-AMINO-9-TRIFLUOROMETHYL-4-OXO-4H-PYRIDO-[3',2'4,5]-FURO-[3,2-D]-(1,3)-PYRIMIDINES/, Journal of fluorine chemistry, 69(2), 1994, pp. 139-143
Synthesis of novel tituted-3-amino-9-trifluoromethyl-4-oxo-4H-pyrido-
[3',2':4,5]-furo[3,2-d]-(1,3)-pyramidines (5) from 3-cyano-4-trifluoro
methyl-6-substituted 2(1H)-pyridones (1) via a series of new intermedi
ates such as hylacetoxy-3-cyano-4-trifluoromethyl-6-substituted pyridi
nes (2), 2-carbethoxy-3-amino-4-trifluoromethyl-6- furo-[2,3-b]-pyridi
nes (3) and ohydrazide-3-amino-4-trifluoromethyl-6-substituted furo-[2
, 3-b]-pyridines (4) have be en described.